Hot-air heating-furnace.



D. s. RICHARDSON.

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HOT AIR HEATING PURNAGE.

APPLICATION FILED PEB. 29, 1908.v

Patented Jan. 12,' 1909.

3 SHEETS-SHEET 2.

D. S. RICHARDSON.

HOT AIR HEATING PURNAUB.

APPLICATION FILED FEB. 29, 1908. 909,672.

Patented Jan. 12, 1909.

3 SHBETS-SHBBT 3.

mmntoz wir" aan:

DWIGHT S. RICHARDSON, OF NEW YORK, N. Y.

HOT-AIR HEATING-FURNACE.

Specification of Letters Patent.

Application filed February 29, 1908.

Patented Jan. 12, 1909.

Serial No. 418,535.

To all whom t may concern:

Be it known that I, DWIGHT S. RICHARD- soN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in I-Iot- Air Heating-Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference marked thereon.

Thisinvention relates to that type of heating furnaces in which air, usually from an external source, is heated in the spaces surrounding the iire pot and flues and conveyed thence through suitable conduits to the apartments to be heated.

The invention has for its object to provide a construction which will effect a more thorough heating of the air with a minimum consumption of fuel, and especially to provide a construction which will effect a positive or forced circulation of the air into the apartments to be heated, with a provision whereby each or any number of the apartments may be supplied with hot air from its own individual heating channel in order that a difficulty now experienced in forcing the heated air through long ducts or to distant apartments may be effectually overcome.

Referring to the accompanying drawings: Figure l is a perspective view partly broken away of a heater embodying the present improvements. Fig. 2 is a sectional view taken on a plane immediately above the body of the heater and below the heating drum, looking downwardly. Fig. 3 is a top plan view of the heating drum and associated parts. Fig. 4 is a detail perspective view showing one of the radiating partition plates with a portion of the top of the heating drum, to illustrate the method of assembling the parts. Fig. 5 is a detail perspective view of a portion of the body of the heater with one of the radiating partition plates in position to be mounted thereon.

Like letters of reference in the several gures illustrate the same parts.

The furnace or heater in connection with which the present invention is illustrated, may be any one of a number of well known types of furnaces which embody a fire pot section, body section, and heating drum through which the products of combustion are caused to circulate in order that the heat of the same may be effectually transmitted to the air in proximity to the same.

[n the drawings, the letter A indicates an ash-pit section, B a fire pot section, and C a body or dome section of a heating furnace. The usual fuel, ash-pit and damper openings are provided for the sections, and as the present invention does not have to do with these particular features, further description is unnecessary. The body or dome section C of the furnace curves inwardly over the fire pot and has a central opening surrounded by a flange c, (Fig. 2), upon which is seated the base of a radiator D, shown in top plan in Fig. 3. This Aradiator receives the products of combustion through the central opening of the body, conducts them rearwardly through the neck (Z into the circular peripheral chamber d in which the said products of combustion travel around to the front of the drum above the intermediate partition d'2, and at the front pass down below the partition d2 and thence around in the chamber d3 to the smoke pipe or exit (Z4. The horse-shoe shaped opening between the center and periphery of the drum constitutes an air heating space through which the air supply is ordinarily conducted into a distributing chamber located above the heating drum and from which the air distributing ducts lead 0E in various directions, but as said distributing drum and ducts are of well known construction, illustration thereof is not deemed necessary.

Surrounding the several lsections of the heater there is the usual sheet-metal casing E, into the lower end of which the fresh air is supplied from any suitable intake.

In accordance with the present invention and in order to subject the fresh air to as large a radiating surface heated by conduction as is possible, as well as to secure certain advantages to be hereinafter referred to, the space in which the air is heated is divided into vertical ducts or channels by radiating partition plates, each having numerous radiating lianges thereon, and each having intimate contact with some portion of the surface ofthe heater which on one side is subjected to the direct action of the incandescent fuel or the heated products and gases emanating therefrom, whereby the entire radiating surface is adapted to be heated by conduction, and such radiating surface is so enormously increased in area as to practically utilize in heating the air, all of the heat unite due to the combustion of the fuel.

In order to make a practical structure from a manufacturers point of view kand to enable the apparatus to be shipped and set up With a minimum amount of labor, not possessing the highest skill, it is desirable to form the radiating` partition plates in independent sections adapted to be supported independently by the several sections of the heater. As incidental to this construction, but having an important bearing upon ultimate success of the arrangement, the separation of the radiating partition plates into sections, prevents any breakage or distortion due to the unequal expansion of the Yseveral parts going to make up the Whole heater, thus, for instance, the fire pot section may expand to a greater extent than the body section, and owing to the separation of the partition plates into sections, the tire pot sections of said radiator plates are free to come and go with the Walls of the fire pot section, and this follows true of the other sections of the heater.

The partition and radiating flanges F carried by the fire pot section may, for convenience, be of the construction illustrated and Vclaimed in my prior patent No. 820,130,

dated May S, 100G. All of the radiating and partition plates embody the idea of a central web and vertical lateral flanges f.V

The radiating and partition plates G of the body section C conform at their inner edges to the shape of theV outer surface of the body section and are conveniently supported at their upper inner corners by a lug or proj ection g, which is adapted to seat by gravity in or behind a lug g', preferably formed directly on the body section itself (see Fig.

In order to hold the radiating plates G in vertical position While permitting them to swing down into intimate and close contact with the surface of the body section, retaining flanges g2 and are provided on the body section, the-flange g2 preferabl extending up and merging in the lug g In addition a projection g4 is provided at the top of the body section to prevent any lateral movement ofthe plate G, such as would per Ymit the lug g/ to escape from the lug g.

It will be understood, of course, that the projections and flanges g2, g3 and g4 are shown as a convenientmeans capable of being readily cast integral with the body section, but it is obvious that manufacturers views with respect to their particular construction Will vary, and hence I do not Wish to be limited to the particular constructionA illustrated.

Vculation of air.

The radiating plates G have theirupper edges in proximity to or in contact with the under surface of the drum D, and in the horse-shoe shaped chamber of the said drum,

radiating and partition plates H are mounted to form continuations of the radiating and partition plates F and G. The radiat-V ing and partition plates H are preferably guided into proper position by shoulders or lugs I, Fig. 4 on the top plates of the drum, and may rest directly on the top edges of t-he inner portions of the radiator pla-tes G. To hold the plates in proper alinement, downwardly extending lingers L are arranged between the flanges f for embracing the upperY edges of the plates G. In addition, the upc per ends of the plates H are provided With heads lz. adapted to rest on the top of the drum, should there be no other support for said plates I-I, or in other Words, if the plates G are omitted or, as might be desirable in some instances, Where they are not located in alinement With the plates H. In the preferred construction, care is taken to so proportion the plates H, G and F, that the flanges f thereon Will be in alinement so as to provide for the more ready upward movement of the body of heated air.

The vertical channels or radiating spaces formed by the radiating and partition 95 plates, it is obvious, may be connected at Y their upperV ends, as by a hood C, (dotted lines Fig. l) with any particular flue through which it is desired to force the cirfect it is, in some instances, desirable to extend the length of the vertical heating channels, in which case the outer edges of the plates F Vand G are surrounded or inclosed by a curved plate L, Figs. 1 and Q.

This construction offers no opportunity for the body of Warm airyforced up through the heater and discharging into the ordinary common distributing drum to return or eddy, and the radiating surface heated by conduction is so greatly increased as to give high efficiency. Where, as most frequently occurs, in installing heating apparatus, some of the distributing mains require a'greater presslu'e than others in order to carry the V115V air to a distant apartment, Vthe vertical air heating chambers connected withV those particular flues may be extended down around the fire pot by means of the supplemental inclosing plates L. Y

The arrangement of the parts issuch that the heater may be adapted to meet practically any conditions which may be found to exist, and coupled With this adaptability is the great advantage, from a manufacturers standpoint, resulting from Vthe ability to cast the parts separately, pack them separately for shipment, and to eliminate highly skilled labor in assembling the parts when the plant is installed.

To increase the forcing ef- 100V Having thus described the invention, what is claimed and desired to be secured by Letters-Patent, is:

l. In an air heating furnace, the combination with the fire pot, body and drum sections, said drum section embodying a center and peripheral lues separated by an air heating space, of vertical radiating partition plates removably suspended from the top of the drum section in the air heating space, radiating plates removably mounted on the body section below the plates on the drum section and independently of the same, radiating plates removably mounted on the ire pot section below the plates on the body section and independently of the same, whereby unbroken air channels are formed but the radiating plates are free to move with the sections on which they are mounted and heated by conduction.

2. In an air heating furnace, the combination with a furnace section exposed on one side to the direct radiation of the re and having a radial lug and vertical liange formed integral therewith, of a radial radiating plate having a projection in proximity to one edge, said projection being adapted to seat behind the lug and the body of the plate to be positioned by the flange.

DWIGHT S. RICHARD SON.

Witnesses ARTHUR NICHOLS, C. RICHARDSON. 

